11231111100 has 180 divisors, whose sum is σ = 35758640120. Its totient is φ = 2721628800.

The previous prime is 11231111027. The next prime is 11231111107. The reversal of 11231111100 is 111113211.

It is a super-2 number, since 2×11231111100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231111107) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4391022 + ... + 4393578.

Almost surely, 2^11231111100 is an apocalyptic number.

11231111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17879320060).

11231111100 is an abundant number, since it is smaller than the sum of its proper divisors (24527529020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11231111100 is a wasteful number, since it uses less digits than its factorization.

11231111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618 (or 2578 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 11231111100 its reverse (111113211), we get a palindrome (11342224311).

It can be divided in two parts, 1123111 and 1100, that added together give a palindrome (1124211).

The spelling of 11231111100 in words is "eleven billion, two hundred thirty-one million, one hundred eleven thousand, one hundred".